In addition to having a different arrangement, the bones of a pelican are hollow, which is a characteristic shared by all birds. The bones of humans and other mammals are not hollow but filled with marrow.
Human Skeletons
No
they have more bones
No
A pelican's beak is different because it has a sack that can hold a ton of fish and up to three gallons of water.
There are many forms of skeletons for different animals. The differences of the human male and female skeletons are as follows. Several general differences exist between the male and female skeletons. The male skeleton is generally larger and heavier than the female. The female skeleton has a wider breast bone and narrower hips.
oil spills?
Crickets have an exo skeleton mostly made up of chiton. Humans have endo skeletons made of calcium carbonate.
yes
They all come in different colors
Simply put, skeletons are similar because the organisms processing them arose from common ancestry. All mammals for instance, have skeletons that are quite similar because all mammal skeletons arose from common ancestry in the Mesozoic age. These mammal skeletons are used in different manner by the entry of populations of organisms into different environments where individuals were selected along lines of adaptation to those different environments. Then the different populations of mammals arose with the very similar skeletons being used in very different ways. Consider yourself, your dog, and whales to see the similarities in skeletal structure with vast differences in use.
All animals at different, so it has to be a specific animal. Generally a human has a different skull. If the animal is an invertebrate, the human skeleton would have a spine whereas the invertebrate would not.